我正在安装tensorflow。我的系统具有以下规格：
py --version
Python 3.8.2
我尝试了以下命令来安装tensorflow模块
py -m pip install --upgrade tensorflow
ERROR: Could not find a version that satisfies the requirement tensorflow (from versions: none)
ERROR: No matching distribution found for tensorflow
py -m pip install tensorflow==2.2
ERROR: Could not find a version that satisfies the requirement tensorflow==2.2 (from versions: none)
ERROR: No matching distribution found for tensorflow==2.2
py -m pip install tensorflow==2.2.0
ERROR: Could not find a version that satisfies the requirement tensorflow==2.2.0 (from versions: none)
ERROR: No matching distribution found for tensorflow==2.2.0
我该怎么做才能在计算机上成功安装它？